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Preparation method of aerogel film lubricant

A technology of airgel and anti-blocking agent, which is applied in the field of preparation of airgel film anti-opening agent, can solve the problems of affecting the opening performance, not easy to disperse, and low affinity, so as to improve the anti-oxidation ability, improve the affinity, Improve the effect of antistatic

Active Publication Date: 2019-05-03
广州凌玮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not post-treat the silica, and the affinity between the silica particles and the organic polymer is low, and it is not easy to disperse in the polymer, thereby affecting its opening performance.

Method used

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  • Preparation method of aerogel film lubricant
  • Preparation method of aerogel film lubricant
  • Preparation method of aerogel film lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of Airgel Film Opening Agent

[0039]At a temperature of 30°C, inject 20L of bottom water and 10L of water glass solution with a silicon dioxide concentration of 10wt% into the stirred reaction vessel, add 4L of sulfuric acid with a concentration of 10wt% after 30 minutes, and react until the final pH value is 6 , stop stirring, and gel reaction for 1 hour. After the gel was completed, it was stirred for 2 hours, and the temperature was raised to 90° C. while stirring. After the temperature reaches, add a small amount of sodium hydroxide to adjust the pH value to 10, and simultaneously add 5 L of sulfuric acid and 12 L of water glass solution with a concentration of 10 wt % in parallel, the pH value in parallel flow is 10 and the time in parallel flow is 2 hours. After the parallel flow is completed, the temperature is adjusted to 95° C., and KH161 (phenyltrimethoxysilane) with a silicon dioxide content of 0.5% is added, and aged for 4 hours. After aging, ...

Embodiment 2

[0044] Preparation of Airgel Film Opening Agent

[0045] At a temperature of 50°C, inject 20L of bottom water and 7L of water glass solution with a silicon dioxide concentration of 15wt% into the stirred reaction vessel, add 2.5L of sulfuric acid with a concentration of 20wt% after 30 minutes, and react until the terminal pH is 8. Stop stirring, and the gel reacts for 1.5 hours. After the gel was completed, it was stirred for 1 hour, and the temperature was raised to 80° C. while stirring. After the temperature is reached, add a small amount of sodium hydroxide to adjust the pH value to 9, and simultaneously add 2.3 L of sulfuric acid and 7 L of water glass solution with a concentration of 15 wt % in parallel, and the pH value in parallel flow is 9 and the time in parallel flow is 1 hour. After the parallel flow is completed, the temperature is adjusted to 90° C., and KH162 (phenyltriethoxysilane) with a silicon dioxide content of 0.5% is added for aging for 3 hours. After a...

Embodiment 3

[0049] Preparation of Airgel Film Opening Agent

[0050] At a temperature of 40°C, inject 20L of bottom water and 20L of water glass solution with a silica concentration of 5wt% into the stirred reaction vessel, add 1.2L of sulfuric acid with a concentration of 30wt% after 30 minutes, and react until the terminal pH is 7. Stop stirring, and the gel reacts for 2 hours. After the gel was completed, it was stirred for 1.5 hours, and the temperature was raised to 70° C. while stirring. After the temperature is reached, add a small amount of sodium hydroxide to adjust the pH value to 8, and simultaneously add 1 L of sulfuric acid and 20 L of water glass solution with a concentration of 30 wt % in parallel, and the pH value in parallel flow is 8 and the time in parallel flow is 1.5 hours. After the parallel flow is completed, the temperature is adjusted to 85° C., KH163 (diphenyldimethoxysilane) with a silica content of 0.5% is added, and aged for 2 hours. After aging, sulfuric ac...

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Abstract

The invention discloses a preparation method of an aerogel film lubricant. The preparation method comprises the following steps: S1, preparing silica aerogel from a water glass solution, and adding asilane coupling agent in the aging process of a silica aerogel synthesizing reaction in order to carry out the surface modification on the silica; S2, adding dilute sulfuric acid after the aging is completed, and reacting the dilute sulfuric acid with the free iron element and compounds in the silica in order to reduce the iron content of the silica; S3, performing aging and filtration to obtain afilter cake, washing the filter cake with the dilute sulfuric acid, processing the filter cake with an ammonium salt solution, and performing uniform dispersing under the action of a dispersing machine and an emulsifying machine; and S4, carrying out spray drying on a slurry obtained after the dispersion is completed, and carrying out jet pulverization to obtain the aerogel film lubricant. The film lubricant product with good smoothness, fluidity, dispersibility and filterability can be obtained through preparation method of the aerogel film lubricant, and has good processing performances inthe production of plastic films.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing, and in particular relates to a preparation method of an airgel film opening agent. Background technique [0002] With the rapid development of the national economy, the demand for plastic films is gradually increasing. However, during the production and storage of plastic films, adhesion between film layers is prone to occur under heat or pressure. In the subsequent production process of the plastic film, the adhesion between the films will affect the unwinding speed of the plastic film at least, and make the plastic film unable to be unrolled at worst. The main reason for the adhesion of plastic films is that after the film is formed, there are a large number of exposed molecular chains on its surface. After the two films are closed, the macromolecular chains are intertwined and adhered to each other, making it impossible to open. The mutual adhesion of plastic films brings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K9/02C08K7/26C08L23/12C08J5/18
Inventor 胡颖妮胡湘仲黄水波喻宁亚胡伟民苏胜培
Owner 广州凌玮科技股份有限公司
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